What are the Cycles specific Viewport Display settings in the material tab good for?
If your 3D Viewport Shading mode is set to &quot;Material Preview&quot;, then these settings become relevant. For example, if you have a glass material and set the Blend mode to &quot;Opaque&quot;, it is not transparent (just like in the render settings for Eevee).
You can change Eevee settings there, without switching render engines.